Abstract: Although paranoia is the most commonly presenting symptom of psychosis, paranoid thoughts occur frequently in the general population and range widely in severity, from mild socio-evaluative concerns to frank delusions about the harmful intentions of others. Furthermore, paranoia commonly appears after a surprisingly diverse range of difficulties including trauma, brain injury, sleep deprivation, drug use, and psychiatric and neurological disorder. Evolutionary accounts of paranoia have been proposed before but have largely focused on paranoia as a misplaced threat response. Although social threat is clearly a key component, the experience of paranoia is markedly more complex than these accounts would lead us to believe: paranoia can involve multiple alterations in the perception of the social environment, the identification of specific but seemingly arbitrary groups as the source of persecution, and extended beliefs about conspiracy and complex coordination between the perceived persecutors. Here, we argue for an evolutionary approach to paranoia that more fully accounts for its complex social phenomenology and considers how it can be understood in light of our evolved social cognition. More specifically, in terms of the ability to form coalitions and coordinate between groups in situations of cooperation and competition.

Abstract: Strong reciprocity explains prosocial cooperation by the presence of individuals who incur costs to help those who helped them (‘strong positive reciprocity’) and to punish those who wronged them (‘strong negative reciprocity’). Theories of social preferences predict that in contrast to ‘strong reciprocators’, self-regarding people cooperate and punish only if there are sufficient future benefits. Here, we test this prediction in a two-stage design. First, participants are classified according to their disposition towards strong positive reciprocity as either dispositional conditional cooperators (DCC) or dispositional free riders (DFR). Participants then play a one-shot public goods game, either with or without punishment. As expected, DFR cooperate only when punishment is possible, whereas DCC cooperate without punishment. Surprisingly, dispositions towards strong positive reciprocity are unrelated to strong negative reciprocity: punishment by DCC and DFR is practically identical. The ‘burden of cooperation’ is thus carried by a larger set of individuals than previously assumed.

Brief Description: This study examines the connections between perceived stress, gender, and BDSM as a leisure activity that may reduce stress for individuals. This study found statistically significant results that BDSM as leisure reduces stress for females and males, with stress reduction being more significant with females.

Abstract: The Technology of Orgasm by Rachel Maines is one of the most widely cited works on the history of sex and technology. Maines argues that Victorian physicians routinely used electromechanical vibrators to stimulate female patients to orgasm as a treatment for hysteria. She claims that physicians did not perceive the practice as sexual because it did not involve vaginal penetration. The vibrator was, according to Maines, a labor-saving technology to replace the well -established medical practice of clitoral massage for hysteria. This argument has been repeated almost verbatim in dozens of scholarly works, popular books and articles, a Broadway play, and a feature-length film. Although a few scholars have challenged parts of the book, no one has contested her central argument in the pe er-reviewed literature. In this article, we carefully assess the sources cited in the book. We found no evidence in these sources that physicians ever used electromechanical vibrators to induce orgasms in female patients as a medical treatment. The success of Technology of Orgasm serves as a cautionary tale for how easily falsehoods can be come embedded in the humanities.

Highlights
• Subjective well-being increases survival in BHPS panel data set for UK
• This effect captures in part the assessment of one’s health status
• This effect disappears when controlling for endogeneity by lagging SWB
• Specific illnesses (e.g. cancer) decrease survival but SWB does not moderate this
• SWB is at best protective rather than curative when it comes to mortality

Abstract: A robust relationship between subjective well-being and mortality has been established in the literature, but few studies address how subjective well-being interacts with the impact of concrete diseases on survival. In addition, issues of endogeneity between bad health and subjective well-being are ignored when it comes to survival. We assess both for the British Household Panel Survey (BHPS; 1991-2008) and specifically analyze whether subjective well-being predicts better chances of surviving diseases such as cancer or heart conditions. We find that several of the studied diseases consistently decrease survival chances in our sample (e.g. hazard ratio 3.47 for cancer), also when controlling for the severity of health problems. But our results do not suggest that well-being mitigates the effect these diseases have on mortality. Life satisfaction also does not predict longer survival in the data set if we control for the endogeneity of subjective well-being.

Abstract: Based on their pharmacological properties, psychoactive drugs are supposed to take control of the natural reward system to finally drive compulsory drug seeking and consumption. However, psychoactive drugs are not used in an arbitrary way as pure pharmacological reinforcement would suggest, but rather in a highly specific manner depending on non-pharmacological factors. While pharmacological effects of psychoactive drugs are well studied, neurobiological mechanisms of non-pharmacological factors are less well understood. Here we review the emerging neurobiological mechanisms beyond pharmacological reinforcement which determine drug effects and use frequency. Important progress was made on the understanding of how the character of an environment and social stress determine drug self-administration. This is expanded by new evidence on how behavioral alternatives and opportunities for drug instrumentalization generate different patterns of drug choice. Emerging evidence suggests that the neurobiology of non-pharmacological factors strongly determines pharmacological and behavioral drug action and may, thus, give rise for an expanded system’s approach of psychoactive drug use and addiction.

Merit or luck - An interpretation of people’s beliefs from an economic perspective. Karen Høgholen. May 11th 2018, Master of Philosophy in Economics, Department of Economics, University of Oslo, https://www.duo.uio.no/bitstream/handle/10852/63119/7/H-gholen-Karen.pdf

Abstract: This thesis studies the tendency people seem to have to belittle the role of luck in life outcomes, especially in the aftermath of success. Translating high income and high state of health to reflect sings of success, I analyse whether having high income or high state of health affects the proneness to believe, that income or health is achieved mainly trough own actions rather than luck. Beliefs around luck are noted to be affecting preferences over redistribution, and this aspect is explored by investigating the relationship between beliefs about societal versus individual responsibility over drug addiction problems. Ordered and binary logistic regression models are constructed to inspect the relationship between beliefs and belief determining predictors, utilising data from a Norwegian survey scanning people’s opinions around drug addiction and responsibility. The main findings suggest that having higher income does not significantly increase the tendency to believe that income is deserved due to effort. Whereas in the case of health, higher self reported state of health seems to increase the tendency to associate bad health with bad habits and lifestyle choices. For the aspect of beliefs about redistribution, it seems like the more the cause of an addiction is related to individual responsibility, the higher is the tendency to think that the addiction problem remains to be solved by the individual himself, rather than being something the society should be responsible for. The role of beliefs in economic theory in general, and what implications beliefs around luck and control have in a policy context is discussed. Parts of an economic model of belief forming mechanisms by Benabou and Tirole (2006), is also presented as an inspiration for the overall themes discussed in this thesis.